From d0cbc93a0110a82ff9e01d3c21d5a2e2027b706f Mon Sep 17 00:00:00 2001 From: Philipp Zabel Date: Tue, 18 Sep 2018 11:34:08 +0200 Subject: [PATCH] gpu: ipu-v3: ipu-ic: allow to manually set resize coefficients For tiled scaling, we want to compute the scaling coefficients externally in such a way that the interpolation overshoots tile boundaries and samples up to the first pixel of the next tile. Prepare to override the resizing coefficients from the image conversion code. Signed-off-by: Philipp Zabel Acked-by: Steve Longerbeam Tested-by: Steve Longerbeam --- drivers/gpu/ipu-v3/ipu-ic.c | 52 ++++++++++++++++++++++++++++----------------- include/video/imx-ipu-v3.h | 6 ++++++ 2 files changed, 39 insertions(+), 19 deletions(-) diff --git a/drivers/gpu/ipu-v3/ipu-ic.c b/drivers/gpu/ipu-v3/ipu-ic.c index 67cc820..594c3cb 100644 --- a/drivers/gpu/ipu-v3/ipu-ic.c +++ b/drivers/gpu/ipu-v3/ipu-ic.c @@ -442,36 +442,40 @@ unlock: } EXPORT_SYMBOL_GPL(ipu_ic_task_graphics_init); -int ipu_ic_task_init(struct ipu_ic *ic, - int in_width, int in_height, - int out_width, int out_height, - enum ipu_color_space in_cs, - enum ipu_color_space out_cs) +int ipu_ic_task_init_rsc(struct ipu_ic *ic, + int in_width, int in_height, + int out_width, int out_height, + enum ipu_color_space in_cs, + enum ipu_color_space out_cs, + u32 rsc) { struct ipu_ic_priv *priv = ic->priv; - u32 reg, downsize_coeff, resize_coeff; + u32 downsize_coeff, resize_coeff; unsigned long flags; int ret = 0; - /* Setup vertical resizing */ - ret = calc_resize_coeffs(ic, in_height, out_height, - &resize_coeff, &downsize_coeff); - if (ret) - return ret; + if (!rsc) { + /* Setup vertical resizing */ - reg = (downsize_coeff << 30) | (resize_coeff << 16); + ret = calc_resize_coeffs(ic, in_height, out_height, + &resize_coeff, &downsize_coeff); + if (ret) + return ret; + + rsc = (downsize_coeff << 30) | (resize_coeff << 16); - /* Setup horizontal resizing */ - ret = calc_resize_coeffs(ic, in_width, out_width, - &resize_coeff, &downsize_coeff); - if (ret) - return ret; + /* Setup horizontal resizing */ + ret = calc_resize_coeffs(ic, in_width, out_width, + &resize_coeff, &downsize_coeff); + if (ret) + return ret; - reg |= (downsize_coeff << 14) | resize_coeff; + rsc |= (downsize_coeff << 14) | resize_coeff; + } spin_lock_irqsave(&priv->lock, flags); - ipu_ic_write(ic, reg, ic->reg->rsc); + ipu_ic_write(ic, rsc, ic->reg->rsc); /* Setup color space conversion */ ic->in_cs = in_cs; @@ -487,6 +491,16 @@ unlock: spin_unlock_irqrestore(&priv->lock, flags); return ret; } + +int ipu_ic_task_init(struct ipu_ic *ic, + int in_width, int in_height, + int out_width, int out_height, + enum ipu_color_space in_cs, + enum ipu_color_space out_cs) +{ + return ipu_ic_task_init_rsc(ic, in_width, in_height, out_width, + out_height, in_cs, out_cs, 0); +} EXPORT_SYMBOL_GPL(ipu_ic_task_init); int ipu_ic_task_idma_init(struct ipu_ic *ic, struct ipuv3_channel *channel, diff --git a/include/video/imx-ipu-v3.h b/include/video/imx-ipu-v3.h index 8bb163cd..e582e8e 100644 --- a/include/video/imx-ipu-v3.h +++ b/include/video/imx-ipu-v3.h @@ -390,6 +390,12 @@ int ipu_ic_task_init(struct ipu_ic *ic, int out_width, int out_height, enum ipu_color_space in_cs, enum ipu_color_space out_cs); +int ipu_ic_task_init_rsc(struct ipu_ic *ic, + int in_width, int in_height, + int out_width, int out_height, + enum ipu_color_space in_cs, + enum ipu_color_space out_cs, + u32 rsc); int ipu_ic_task_graphics_init(struct ipu_ic *ic, enum ipu_color_space in_g_cs, bool galpha_en, u32 galpha, -- 2.7.4